*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-padding-top: calc(var(--nav-height) + var(--space-md));
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--bg-deep);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  min-height: 100vh;
  padding-left: var(--safe-left);
  padding-right: var(--safe-right);
}

body.no-scroll {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent-teal);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover,
a:focus-visible {
  color: var(--text-primary);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  line-height: var(--leading-tight);
  font-weight: 600;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: 10000;
  padding: var(--space-sm) var(--space-md);
  background: var(--accent-teal);
  color: var(--bg-deep);
  border-radius: var(--glass-radius-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-md);
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.section {
  padding-block: var(--space-section);
  position: relative;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-teal);
  margin-bottom: var(--space-md);
}

.section-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-lg);
  max-width: 20ch;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 60ch;
  margin-bottom: var(--space-xl);
}

.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 80% 60% at 20% 10%, rgba(45, 212, 191, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 80%, rgba(167, 139, 250, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(96, 165, 250, 0.04) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-surface) 100%);
  pointer-events: none;
}

@media (prefers-reduced-motion: no-preference) {
  .bg-mesh::after {
    content: "";
    position: absolute;
    inset: 0;
    background:
      radial-gradient(ellipse 40% 30% at 70% 20%, rgba(45, 212, 191, 0.05) 0%, transparent 50%);
    animation: meshDrift 20s ease-in-out infinite alternate;
  }
}

@keyframes meshDrift {
  from { transform: translate(0, 0) scale(1); }
  to { transform: translate(-2%, 3%) scale(1.05); }
}

:focus-visible {
  outline: 2px solid var(--accent-teal);
  outline-offset: 3px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}